Feels Like Temperature Map
The United States Feels Like Temperatures map show what the outdoor temperature will feel like for the current day.

Thinking about the Frost?

First & Last Freeze Map
The First and Last Freeze image shows the average date when the first and last freezing temperatures can be expected.

Frost & Freeze Map
The Frost and Freeze map shows where frost can be expected and where temperature are forecast to fall below 32 degrees F.

Temperature Measurement

Temperature is measured with thermometers that may be calibrated to a variety of temperature scales. In most of the world (except for the United States, Jamaica, and a few other countries), the degree Celsius scale is used for most temperature measuring purposes. The entire scientific world (the U.S. included) measures temperature using the Celsius scale and thermodynamic temperature using the Kelvin scale, which is just the Celsius scale shifted downwards so that 0 K= −273.15°C, or absolute zero. Many engineering fields in the U.S., especially high-tech ones, also use the Kelvin and degrees Celsius scales. However, the United States is the last major country in which the degree Fahrenheit temperature scale is used by most lay people, industry, popular meteorology, and government.